Page 12 of 28
A8520E24A91 – Users Manual
Release Date: Dec 27
th
2010
Figure 3 Example of AFH hop sequence (active set in color, trial set in black/gray)
The frequency hopping algorithm, when no swaps between the active and trial channel sets
occur, goes through a sequence of 70 hops over the course of which every RF channel has
been used.
This 70-hop macrosequence consists of 14 repetitions of a
o
5-hop microsequence during which
Each of the four active RF channels are used once
One of the trial RF channels is used once (cycling through all trial
channels over the course of a macrosequence)
Figure 3 illustrates this concept. This gives an average steady-state RF channel usage in an
audio network of:
Each of the four active channels are used 20% of the time
Each trial channel is used 1.43% of the time
The channels correspond to center frequencies as follows:
Channel Center
Frequency
[MHz]
Channel Center
Frequency
[MHz]
1 2406
10
2442
2 2410
11
2446
3 2414
12
2450
4 2418
13
2454
5 2422
14
2458
